xtea: trim trailing spaces
demos/encrypt.c: add possibility to use parameter -t for testing a cipher
xtea: add new testvectors
xtea: use correct load and store macros
trim trailing spaces in header files
remove unused variable in demos/encrypt.c
fixed 'golden' XTEA testvectors that are used when running testme.sh
Merge branch 'fix/xtea' into develop